N.Y. Comp. Codes R. & Regs. tit. 3, § 11.3
(a) Any insider transaction which, either alone or when aggregated in accordance with section 11.4 of this Part involves assets or services having a fair market value or payments in excess of the following amounts:
(4) one half of one percent of the net worth of the bank if the total assets of the bank are more than $1,000,000,000;
shall be specifically reviewed and approved by the bank's board of directors or board of trustees. Notwithstanding the foregoing, no approval of a separate insider transaction shall be required if the transaction is part of a series of related business transactions involving the same insider and the bank's board of directors or board of trustees has reviewed and approved the entire series of related transactions and the terms and conditions under which such transactions may take place.